Apparatus for drying and heating ladles, &amp;c.



B. WIDBKIND. APPARATUS FOB. DRYING AND HEATING LADLES, 6x0. APPLIOATIQN FILED DEG. 5, 1911.

1,057,905. Patented Apr. 1, 1913.

Unfurn- STATES PATENT onnicn.;

Y f Encan wrnnxrnn', ornu'ssnnnonr, GERMANY.

ArPARArUs ynon DRY'INc AND'HEATING LADLns, &c.

T all wim/n z' may concern subject' of the King of Prussia., German Em-l peroi",v residing at Dusseldorf, 1n the King,-

dom of Prussia, German Empire,.have inf, vented certain new and useful improvements' in apparat-us for drying and heating ladies rapidly and in such a manner that the inter,`

. nal coating of the ladle made of refractory =v material is not damaged.

At present the drying and heating of' ladles is effected in such a manner that in the ladle coated with refractory material, a fire of wood, coal,col e, briquets, or as is lighted, the open end of the ladle being directedupwardly. After the preliminary drying of the ladle itis turned upside down and placed upon a' furnace to be heated to the required temperature. The ladleA is situated at a certain distance above the fire so that the products of combustion can escape under the lrim of the ladle. These wellknown methods present a certain number of inconveniences. At the preliminary drying of the ladle which is in upright position, only a small part of the heat produced by the tire' which is lighted in t-he ladle is util lized, the greatest part of the heat escaping 'at the open end of the ladle. Itis not possible ,to preliminarily dry a ladle placed upside down because the vapors of the water and the tar adhere to the internal coating of the ladle and would escape only very slowly underthe rim of the ladle: ln any case the preliminary drying of a ladle turned upside down would require-much time. Another inconvenience 'is that the smoke lfrom t-he open fire is dangerous and unhealthy for the workmen and that further it darkensthe windows and walls of the room or buildings.

This invention has for its object" to improve the drying and heating of ladles in such a manner that this work is executed much more rapidly than it is possible at present, that the fuel is completely utilized, that no unpleasant eects arise from the smoke, and that the temperature in the ladle gradually increases during the drying and heating whereby the refractory coating is better preserved.

With the methods applied at present the drying of freshly coated ladles and theheat-' ing of thecoating which is necessary before :he ladle is in proper condition to receive the Specification of Letters Patent.

l v molten steel form two separate operations Be it known that'l; Encan`lvinnnrnn, a

for, .thereasom that Ifor-the drying the, open Patented Apr. 1,1913. 'Apneaua med December 5,1911. ,serieu Nb.' 664,125. i

end ofthe ladle has tobe directed upwardly whileffor the theating this opening .is placed vover the fire. According to the present invention. thev drying andthe lheatlng are effected one operation and by means of one and the same device. For drying and heating Ithe is'used which is sho'wnin the accompanying drawings in Figure 1 in cross section', and in Fginaplanview.' i y The ladle a, coated in they well-known manner with refractory material, is placed over a furnace in such a manner that in o smoke .can escape under the rim of the ladle. Y b 'is a gas burner mounted atthe center of the drying and heating apparatus. The

ladle a device ,i

gas is supplied to the burner by the conduit The drying andheating of the ladle a A coated with refractory material is effected in the 'following manner; The lheat generated by the burner b drives the waterout ofthe coating y01E Vthe ladle and the moisture together with theproducts 'of combustion is. drawn o through the annular space e and the channel f owin to the draft of the chimney g. yThe moisture cannot adhere to the surface of the coating of the ladle a as the heated air from the burner continuously moves along the surfacev of said ycoating drawing along the' moisture'and vapors as soon .as the same come out ofthe refractory material. The productsv of combustion dow-v ing alongvthe channel' e heat the gas and air4 for combustion which arrives through the pipes o and d respectively, said pi es being partly situated in the channel f. wing to the progressive drying and heating of the ladle a thetemperature of the products of combustion increases whereby gradually increases the temperature of the as land air for combustion and consequenty also the temperature of the ameof the burner. The temperature of the heating device is auto-i.A

matically increased gradually, wherefrom results the advantage that the refractory coating is better preserved. In order toob- -tain a better utilization of the calories contained in the products of combustion the les said casing, a burner centrally and vertically casing of suitable material forming a longitudinal channel, a vertical extension at one end of said casing haring a circular hole, a chimney connected with the other end of mounted in the front end of said casing, a gas pipe and an air pipe terminating in said burner and conducted .through the longitu- 4 dinal vchannel of said casing so that the.

gases of combustion and the moisture drawn 0E from the ladle flowing along said pipes heats the gas and air for combustion and consequently automatically increases -the temperature of the gases of combustion, substantially as described and shownland for the purpose set forth.

` In witness whereof I have hereunto setI my hand in the presence of t-Wo Witnesses. EDGAR WIDEKIND.

Witnesses: y, Y- y LOUIS VANpoR, THERESE THRANBEREND.

Goplea el! this patent may' be obtained. for

five cents each, by addressing them Commissioner of Patents, Washington, D. C. 

